Advertise virtually anything here, with CPM banner ads, CPM email ads and CPC contextual links. You can target relevant areas of the site and show ads based on geographical location of the user if you wish.

replying instantly (live) is not realistic, and only the fantasy of
someone wanting something now, and now is not always possible.

I would use only use SMS very sparingly; If you contanted
me once a week, even if it was something new, then I
would opt out of your shit very quickly. You can only take
on so much crap, and I even find myself opting out of
elists once a week that I signed up for months earlier....
people can lose interest so quickly these days...

Include your client or user name in the SMS. Most of the marketing SMS messages are ignored by the users. I recommend to sms only when there is a birthday of your users. Give me special offer. You can even make a call to wish him many happy returns of the day.